X Super Properties

X-Super-Properties

What is X-Super-Properties?

• A custom http header sent with a number of endpoint requests.
• A JSON base64 encoded string containing information about the user's device.
• A potential deterrent against bots.

Information it provides:

{    
    'os': /* The user's operating system. */
    'browser': /* The user's browser. */
    'device': '', /* Unknown (potentially used with mobile/desktop-app) */
    'browser_user_agent': /* User Agent */
    'browser_version': /* User's browser version */
    'os_version': /* Operating system version */
    'referrer': /* Unknown (never seen it used) */
    'referring_domain': /* Unknown (never seen it used) */
    'referrer_current': /* Unknown (never seen it used) */
    'referring_domain_current': /* Unknown (never seen it used) */
    'release_channel': 'stable',
    'client_build_number': /* OS build number(?) */
    'client_event_source': null
}

Notes

• Does not provide personally-identifiable information.
• It is not required in requests; meaning it is most likely used to detect bots (which do not provide this header).